Home / 826,095,123.20-1,239,142,684.80-280,836,657.20

Finding the Fourth Proportional to 826,095,123.20, 1,239,142,684.80 and 280,836,657.20

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Solution

The fourth proportional to 826,095,123.20, 1,239,142,684.80 and 280,836,657.20 is: 421,254,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,095,123.20 : 1,239,142,684.80 = 280,836,657.20 : x
  2. Step 2: Convert to fraction form
    826,095,123.20/1,239,142,684.80 = 280,836,657.20/x
  3. Step 3: Cross multiply
    826,095,123.20x = 1,239,142,684.80 × 280,836,657.20
  4. Step 4: Simplify right side
    826,095,123.20x = 347,996,689,393,065,216
  5. Step 5: Solve for x
    x = 347,996,689,393,065,216/826,095,123.20
  6. Step 6: Final answer
    x = 421,254,985.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.